Window-stop



E. E. CRAWFORD.

WINDOW SWP.

APPLICATION HLED MM2?. 1920.

UNl'll@ STATES EDWARD E. CRAWFORD, OF

BRMERTON, V'IASHINGTON.

WINDOW-STOP.

App1cation filed May 27,

To all 'who/m, t may concern Be it known that I, EDWARD E. Crzawronn, acitizen of the United States, residing at Bremerton, in the county ofKitsap and State of W'ashington, have invented certain new and usefulImprovements in Window- Sto-ps, of which the following is aspecification.

The object of this invention is to provide a simple7 inexpensive andeiicient device which may be readily applied to any window sash and bythe use of which the opening of a window from the outside will beprevented, although the window may be opened from the inside to alimited extent for ventilating purposes.

The invention is illustrated in the accompanying drawings, in which-Figure l is a perspective view of a portion of a window having theinvention applied thereto;

Fig. 2 is an enlarged vertical section sho-wing the operation of theinvention;

Fig. 3 is a front elevation of a portion of a window sash having theimproved device applied thereto.

In the drawings, the reference numeral 1 indicates a portion of a windowframe, 2 designates the upper sash and 3 designates the lower sash, allof which parts may be of any desired dimensions and of the usualconstruction except as hereinafter specifically set forth.

In carrying out my invention, I form in the inner face of the side barof the upper sash a recess in which a casing 4 is snugly fitted. Thiscasing may be of thin cast metal or may be stamped out of sheet metal aspreferred, but in any event will present a chamber 5 in which the stopor lock is mounted. The casing also presents a face plate 6 through theends of which fastening screws or similar devices 7 may be inserted tosecure the casing or frame in place. The back wall of the casing isarcuate in its upper portion, as shown at 8, and in its lower portionpresents an inclined web 9 from which depends a vertical wall 10, saidvertical wall being spaced from the inner side or face plate, as clearlyshown irl-Fig. 2. rlhe bottom end wall 11 of the casing is constructedwith a recess or notch 12 to permit the insertion of a linger when it isdesired to turn the lock or stop to its operative position. lt will bereadily understood of course, that the face plate 6 lies flush with theinner Specication of Letters Patent.

Patented J une 7, 1921.

1920. Serial No. 384,675.

8 thereof is a pin or shaft 13 upon which is v rotatably mounted a stopconsistingof a fiatsided circular body 14 and a tangential dog or tooth15. The body 14 and tooth 15 are of such dimensions that the tooth maylit closely within the lower portion of the casing with the outerstraight side thereof flush with the face plate when the device is inits inoperative position so that there will be no obstruotion to thefree movement of either sash. When it is desired to lock the sashesagainst opening from the outside, the stop is turned to the positionshown in Figs. l and 2, whereupon the tooth will pro-ject from the faceof the sash at a right angle thereto so that it will be adapted toimpinge upon the upper cross bar of the lower sash and thereby limit themovement of both sashes. The body 14 of the stop is provided with aperipheral recess 16 and upon the back wall of the casing at the lowerside of the arcuate portion 8 thereof is a transverse shoulder 17. -Aleaf spring 18 is secured at one end upon the peripheral face of thestop at the extremity of the recess 16 and at the base of the tooth 15.The free end of this spring 18 is adapted to press outwardly and engageagainst the shoulder 17, as shown in Fig. 2, so that when the stop hasbeen turned to its operative position it will be held in said positionuntil the sashes are closed sufficiently to give access through thefront of the casing to the spring detent or pawi. When the tooth 15 isturned downwardly, the spring will ride backwardly within the casingand-will seat in the recess in the body 14 and will frictionally engagethe back wall of the casing so as to hold the stop in its inoperativeposition.

Normally the device will be in its inoperative position. When it isdesired to open a window for Ventilating an apartment and permit it toremain open to an extent suicient for ventilation but not sufficient topermit the entrance of a person from the outside, the lower end of thetooth 16 is engaged by the end of a finger inserted in the recess 12 andthe stop is then swung to the position shown in Figs. 1 and 2 in whichthe outer flat tangential face of the tooth abuts the upper flattangential wall of the casing. Either sash may then be closed or openedwithin the lirnit provided by the step without further manipulation ofthe stop so that Ventilation may be obtained but the entrance of anintruder will be prevented. When it is ldesired to reedjust the windowso that either sash may be opened to its full extent, the sashes arelirst adjusted te clear the face plate 6 after which a slight pressureis ex-` erted upon the free end of the spring 18 so that its end will bereleased from the shoulder 17 and the stop is then swung down wardly soas te be housed within the casing.

lt will he readily noted that I have provided an exceedingly simple andinexpensive device which may be very easily manipulated and is `highlyetieient for the purpose fer which it is designed.

Having thus described the invention, what is claimed as new is: i

A device 'fior the purpose set 'lortli eoinprisingi` e easing having anupper circular chamber with an upper tangential wall eX- tending to thefront face et the easing and a lower inclined tangential wallterminating short ot the tace of the casing, the easing beingconstructed to presenta recess extending downwardly liroin the terminaloi the lower tangential wall, a transverse shoulder at the upperterminal of the lower tangential wall, a stop pivotally mounted in theupper portion of the easing and comprising,- e circular body concentricwith the pivot, and a tooth projecting tangentially from said circularbody and adaptedto iinpinge against the upper tangential wall of theeasing or to be housed within the downwardly ,extending recess, thecircular body of the stop being provided with e peripheral recess, anda` resilient detent secured at one end inV the said recessand having`its other end free to engage the transverse shoulder on the lowertangential wall of the casing or to be housed within said peripheralrecess and frictionally engage the rear arcuate wall et the casing.

ln testimony whereof l atliX my signature.

newline n. celivvronn. [L sg

